Example usage for javax.xml.stream XMLEventFactory createStartElement

Introduction

In this page you can find the example usage for javax.xml.stream XMLEventFactory createStartElement.

Prototype

public abstract StartElement createStartElement(String prefix, String namespaceUri, String localName);

Source Link

Document

Create a new StartElement.

Usage

From source file:org.springframework.batch.item.xml.StaxEventItemWriter.java

/**
 * Writes simple XML header containing:/*from   w ww  .  jav a2  s. co m*/
 * <ul>
 * <li>xml declaration - defines encoding and XML version</li>
 * <li>opening tag of the root element and its attributes</li>
 * </ul>
 * If this is not sufficient for you, simply override this method. Encoding,
 * version and root tag name can be retrieved with corresponding getters.
 * 
 * @param writer XML event writer
 * @throws XMLStreamException
 */
protected void startDocument(XMLEventWriter writer) throws XMLStreamException {

    XMLEventFactory factory = createXmlEventFactory();

    // write start document
    writer.add(factory.createStartDocument(getEncoding(), getVersion()));

    // write root tag
    writer.add(
            factory.createStartElement(getRootTagNamespacePrefix(), getRootTagNamespace(), getRootTagName()));
    if (StringUtils.hasText(getRootTagNamespace())) {
        if (StringUtils.hasText(getRootTagNamespacePrefix())) {
            writer.add(factory.createNamespace(getRootTagNamespacePrefix(), getRootTagNamespace()));
        } else {
            writer.add(factory.createNamespace(getRootTagNamespace()));
        }
    }

    // write root tag attributes
    if (!CollectionUtils.isEmpty(getRootElementAttributes())) {

        for (Map.Entry<String, String> entry : getRootElementAttributes().entrySet()) {
            String key = entry.getKey();
            if (key.startsWith("xmlns")) {
                String prefix = "";
                if (key.contains(":")) {
                    prefix = key.substring(key.indexOf(":") + 1);
                }
                writer.add(factory.createNamespace(prefix, entry.getValue()));
            } else {
                writer.add(factory.createAttribute(key, entry.getValue()));
            }
        }

    }

    /*
     * This forces the flush to write the end of the root element and avoids
     * an off-by-one error on restart.
     */
    writer.add(factory.createIgnorableSpace(""));
    writer.flush();

}

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From source file:org.springframework.batch.item.xml.StaxEventItemWriterTests.java

/**
 * Item is written to the output file only after flush.
 *///from  w w w  . ja  v a2 s .c o  m
@Test
public void testWriteWithHeader() throws Exception {

    writer.setHeaderCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("", "", "header"));
                writer.add(factory.createEndElement("", "", "header"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }

        }

    });
    writer.open(executionContext);
    writer.write(items);
    String content = getOutputFileContent();
    assertTrue("Wrong content: " + content, content.contains(("<header/>")));
    assertTrue("Wrong content: " + content, content.contains(TEST_STRING));
}

---

From source file:org.springframework.batch.item.xml.StaxEventItemWriterTests.java

/**
 * Open method writes the root tag, close method adds corresponding end tag.
 *//*from   w w w.ja  v a  2 s  .  c  om*/
@Test
public void testOpenAndClose() throws Exception {
    writer.setHeaderCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("", "", "header"));
                writer.add(factory.createEndElement("", "", "header"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }

        }

    });
    writer.setFooterCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("", "", "footer"));
                writer.add(factory.createEndElement("", "", "footer"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }

        }

    });
    writer.setRootTagName("testroot");
    writer.setRootElementAttributes(Collections.<String, String>singletonMap("attribute", "value"));
    writer.open(executionContext);
    writer.close();
    String content = getOutputFileContent();

    assertTrue(content.contains("<testroot attribute=\"value\">"));
    assertTrue(content.contains("<header/>"));
    assertTrue(content.contains("<footer/>"));
    assertTrue(content.endsWith("</testroot>"));
}

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From source file:org.springframework.batch.item.xml.StaxEventItemWriterTests.java

/**
 * Resource is deleted when items have not been written and shouldDeleteIfEmpty flag is set.
 *//*ww w  .  j a  v a 2 s.  c  o m*/
@Test
public void testDeleteIfEmptyNoRecordsWrittenHeaderAndFooter() throws Exception {
    writer.setShouldDeleteIfEmpty(true);
    writer.setHeaderCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("", "", "header"));
                writer.add(factory.createEndElement("", "", "header"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }

        }

    });
    writer.setFooterCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("", "", "footer"));
                writer.add(factory.createEndElement("", "", "footer"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }

        }

    });
    writer.open(executionContext);
    writer.close();
    assertFalse("file should be deleted" + resource, resource.getFile().exists());
}

---

From source file:org.springframework.batch.item.xml.StaxEventItemWriterTests.java

/**
 * Resource is not deleted when items have been written and shouldDeleteIfEmpty flag is set (restart after delete).
 *//*from   w w w .jav  a 2  s.  c  om*/
@Test
public void testDeleteIfEmptyNoRecordsWrittenHeaderAndFooterRestartAfterDelete() throws Exception {
    writer.setShouldDeleteIfEmpty(true);
    writer.setHeaderCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("", "", "header"));
                writer.add(factory.createEndElement("", "", "header"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }

        }

    });
    writer.setFooterCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("", "", "footer"));
                writer.add(factory.createEndElement("", "", "footer"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }

        }

    });
    writer.open(executionContext);
    writer.update(executionContext);
    writer.close();
    assertFalse("file should be deleted" + resource, resource.getFile().exists());
    writer.open(executionContext);
    writer.write(items);
    writer.update(executionContext);
    writer.close();
    String content = getOutputFileContent();
    assertTrue("Wrong content: " + content, content.contains(TEST_STRING));
}

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From source file:org.springframework.batch.item.xml.StaxEventItemWriterTests.java

private void initWriterForSimpleCallbackTests() throws Exception {
    writer = createItemWriter();//ww w  .j a  v  a  2 s.  co m
    writer.setHeaderCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("ns", "http://www.springframework.org/test", "group"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }
        }

    });
    writer.setFooterCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createEndElement("ns", "http://www.springframework.org/test", "group"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }

        }

    });
    writer.setRootTagName("{http://www.springframework.org/test}ns:testroot");
    writer.afterPropertiesSet();
}

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From source file:org.springframework.batch.item.xml.StaxEventItemWriterTests.java

private void initWriterForComplexCallbackTests() throws Exception {
    writer = createItemWriter();/*ww w.  j a  va 2  s . c  om*/
    writer.setHeaderCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("", "", "preHeader"));
                writer.add(factory.createCharacters("PRE-HEADER"));
                writer.add(factory.createEndElement("", "", "preHeader"));
                writer.add(factory.createStartElement("ns", "http://www.springframework.org/test", "group"));
                writer.add(factory.createStartElement("", "", "subGroup"));
                writer.add(factory.createStartElement("", "", "postHeader"));
                writer.add(factory.createCharacters("POST-HEADER"));
                writer.add(factory.createEndElement("", "", "postHeader"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }
        }

    });
    writer.setFooterCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("", "", "preFooter"));
                writer.add(factory.createCharacters("PRE-FOOTER"));
                writer.add(factory.createEndElement("", "", "preFooter"));
                writer.add(factory.createEndElement("", "", "subGroup"));
                writer.add(factory.createEndElement("ns", "http://www.springframework.org/test", "group"));
                writer.add(factory.createStartElement("", "", "postFooter"));
                writer.add(factory.createCharacters("POST-FOOTER"));
                writer.add(factory.createEndElement("", "", "postFooter"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }

        }

    });
    writer.setRootTagName("{http://www.springframework.org/test}ns:testroot");
    writer.afterPropertiesSet();
}

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From source file:org.springframework.batch.item.xml.TransactionalStaxEventItemWriterTests.java

/**
 * Item is written to the output file only after flush.
 *//*from ww  w.j av a2 s.  c om*/
@Test
public void testWriteWithHeaderAfterRollback() throws Exception {
    writer.setHeaderCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("", "", "header"));
                writer.add(factory.createEndElement("", "", "header"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }

        }

    });
    writer.open(executionContext);
    try {
        new TransactionTemplate(transactionManager).execute(new TransactionCallback<Void>() {
            @Override
            public Void doInTransaction(TransactionStatus status) {
                try {
                    writer.write(items);
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
                throw new RuntimeException("Planned");
            }
        });
        fail("Expected RuntimeException");
    } catch (RuntimeException e) {
        // expected
    }
    writer.close();
    writer.open(executionContext);
    new TransactionTemplate(transactionManager).execute(new TransactionCallback<Void>() {
        @Override
        public Void doInTransaction(TransactionStatus status) {
            try {
                writer.write(items);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
            return null;
        }
    });
    writer.close();
    String content = outputFileContent();
    assertEquals("Wrong content: " + content, 1, StringUtils.countOccurrencesOf(content, ("<header/>")));
    assertEquals("Wrong content: " + content, 1, StringUtils.countOccurrencesOf(content, TEST_STRING));
}

---

From source file:org.springframework.batch.item.xml.TransactionalStaxEventItemWriterTests.java

/**
 * Item is written to the output file only after flush.
 *//*from w  w w . j  a v  a  2  s  .co  m*/
@Test
public void testWriteWithHeaderAfterFlushAndRollback() throws Exception {
    writer.setHeaderCallback(new StaxWriterCallback() {

        @Override
        public void write(XMLEventWriter writer) throws IOException {
            XMLEventFactory factory = XMLEventFactory.newInstance();
            try {
                writer.add(factory.createStartElement("", "", "header"));
                writer.add(factory.createEndElement("", "", "header"));
            } catch (XMLStreamException e) {
                throw new RuntimeException(e);
            }

        }

    });
    writer.open(executionContext);
    new TransactionTemplate(transactionManager).execute(new TransactionCallback<Void>() {
        @Override
        public Void doInTransaction(TransactionStatus status) {
            try {
                writer.write(items);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
            return null;
        }
    });
    writer.update(executionContext);
    writer.close();
    writer.open(executionContext);
    try {
        new TransactionTemplate(transactionManager).execute(new TransactionCallback<Void>() {
            @Override
            public Void doInTransaction(TransactionStatus status) {
                try {
                    writer.write(items);
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
                throw new RuntimeException("Planned");
            }
        });
        fail("Expected RuntimeException");
    } catch (RuntimeException e) {
        // expected
    }
    writer.close();
    String content = outputFileContent();
    assertEquals("Wrong content: " + content, 1, StringUtils.countOccurrencesOf(content, ("<header/>")));
    assertEquals("Wrong content: " + content, 1, StringUtils.countOccurrencesOf(content, TEST_STRING));
}

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